JPS5931565B2 - Variable raw material distribution plate take-out device for blast furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a variable raw material distribution plate take-out device for a blast furnace.

Generally, a raw material distribution plate that deposits raw materials such as iron ore, coke, etc. in an arbitrary mountain shape is installed in a blast furnace, and the work of taking this raw material distribution plate out of the furnace through an opening provided in the furnace wall is carried out. It is very troublesome, and in order to take out the raw material distribution plate from the opening, an opening area larger than the area of the raw material distribution plate is required, which has the disadvantage that the strength of the furnace wall is reduced.

However, the present invention was made in view of the above circumstances, and
The purpose of this is to push out or pull back at least one of a plurality of bushing rods attached to a raw material distribution plate located inside the furnace, thereby tilting the raw material distribution plate and attaching it to the furnace wall. An object of the present invention is to provide a variable type distribution plate take-out device for a blast furnace, which is characterized in that the raw material can be taken out from the furnace through an opening.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In the figure, reference numeral 10 denotes a blast furnace, and the upper part of the blast furnace 10 is provided with a storage section 20 in which raw materials are temporarily stored.The storage section 20 supplies the raw materials into the furnace in appropriate amounts in a substantially cylindrical container 21. A substantially conical bell 22 is inserted from below the container 21, and the lower part of the bell 22 is in contact with the lower peripheral edge of the container 21.

The bell 22 is fixed to a rod 23 that moves it up and down.

An opening 12 is provided in the furnace wall 11 of the blast furnace 10 at an intermediate position between where the raw material falls from the storage section 20 and comes into contact with the inside of the furnace wall 11 .

A raw material distribution plate 30 is placed in the furnace near the opening 12, and two support pieces 31, 31 and one bush rod 32 are arranged on the outer side of the raw material distribution plate 30. One end of each is rotatably attached by a pin.

The other end of each of the support pieces 31 and 31 is fixed to a carriage 40 located outside the furnace through an opening 12 provided in the furnace wall 11, and the other end of the bushing rod 32 is fixed to a carriage 40 located outside the furnace. It is fixed to the tip of the piston rod 42 of the cylinder 41 to be driven.

The cylinder 41 is rotatably attached to the truck 40 by a support pin 43.

On the lower surface of the cart 40, there are four rails that move along rails 50 and 50 arranged in parallel outside the furnace so that the raw material distribution plate 30 can reciprocate between the furnace wall 11 and the furnace core. wheel 44
．． 44... is installed.

Further, a flange 13 is fixed to the outer wall of the furnace 10 at the opening 12 of the furnace wall 11, and a lid 14 for sealing the opening 12 is tightly fixed to the flange 13 with bolts or the like. Gas seal devices 15, 15, 16 are attached to the lid body 14 so that the support pieces 31, 31 attached to the raw material distribution plate 30 and the bush rod 32 can reciprocate, and a gas seal device is installed to seal the bush rod 32. 16 is attached to the lid body 14 so as to be able to follow the vertical movement of the bushing rod 32.

The operation of the embodiment having the above configuration will be explained.

Raw materials such as iron ore and coke are stored in advance in a storage section 20 provided in the upper part of the blast furnace 10 .

When the bell 22 of the storage section 20 in which the raw material is stored is lowered, the bell 22 is separated from the lower part of the container 21 of the storage section 20, and the raw material falls from the gap and is deposited in the furnace.

In order to bring the raw material into contact with the raw material distribution plate 30 and change the falling direction of the raw material when the raw material falls, first, the trolley 40 is
Move the rail 5 in the direction shown by the solid line from the position shown by the chain line in Figure 2.
When moved along the angle of 0.50, each support piece 31° 31 and bushing rod 32 fixed to the carriage 40 move toward the furnace wall 1.
The raw material distribution plate 30 is moved toward the furnace core in a vertical state through the gas seal devices 15, 15, 16 of the lid body 14 attached to the opening 12 of The core gradually contacts the upper part from the lower part of the side surface, and by changing this contact position, the falling direction of the raw material changes from the inside of the furnace wall 11 to the furnace core side, and the raw material is deposited in an arbitrary mountain shape in the furnace. be done.

Moreover, in order to move the raw material distribution plate 30 toward the furnace wall 11, the cart 40 is moved in a direction away from the furnace, and the operation opposite to the above-described operation is performed.

However, even if such an operation is performed, the raw material is deposited in the furnace in a substantially vertical or arbitrary mountain shape.

In addition, in order to take out the raw material distribution plate 30 outside the furnace, remove the lid 14 from the flange 13 of the furnace wall 11, and attach it to the trolley 40 while being hooked to each support piece 31, 31 and bushing rod 32. This is done by operating the cylinder 41 that has been opened.

By this operation of the cylinder 41, the piston rod 42 of the cylinder 41 is pulled into the cylinder 41, the bushing rod 32 is moved toward the outside of the furnace, and the upper end of the raw material distribution plate 30 is tilted toward the outside of the furnace.At this time, the raw material distribution plate The support pieces 31, 31 and the bushing rod 32 attached to the bushing rod 30 rotate the raw material distribution plate 30 according to the above-mentioned inclination, and the mounting of the raw material distribution plate 30 of the bushing rod 32 has its side end moved downward. By this movement of the bushing rod 32, the cylinder 41 attached to the truck 40 is rotated about the support pin 43.

While maintaining this state of the raw material distribution plate 30, the cart 40 is moved toward the outside of the furnace along the rails 50, 50, and the raw material distribution plate 30 is taken out of the furnace.

Note that when using the raw material distribution plate 30, the cylinder 41
By appropriately operating the material distributing plate 30 to change the inclination and moving the material distribution plate 30, the material can be deposited in an arbitrary mountain shape in the furnace.

As described in detail above, the present invention is capable of tilting the raw material distribution plate by pushing out or pulling back at least one of the plural bush rods rotatably attached to the raw material distribution plate. , the opening in the furnace wall can be made smaller, which improves the sealing performance of the opening and increases the strength of the furnace wall.Moreover, it is possible to take out the raw material with the distribution plate tilted. Since the work is done, the work can be done easily.

In addition, since the material distribution plate is only tilted by operating the cylinder that operates the bushing rod, the operation is extremely simple.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of the entire structure according to the present invention, FIG. 2 is an enlarged side view of the main part thereof, and FIG. 3 is a view taken along the line ■-■ in FIG. 2. 10... Blast furnace, 11... Furnace wall, 12.
...Opening, 30... Raw material distribution plate, 31
...Support piece, 32 ... Butsch rod, 40 ... Trolley.

Claims (1)

[Claims] 1. An opening is formed in the furnace wall of the blast furnace, and through the opening, one end of a plurality of bush rods is rotatably attached to a raw material distribution plate located inside the furnace, and the other end is attached to a trolley located outside the furnace. A variable raw material distribution plate take-out device for a blast furnace, characterized in that at least one of the bushing rods is attached to a drive device attached to a truck.